Turtle attack

function load(name)
    local file = fs.open(name,"r")
    local data = file.readAll()
    file.close()
    return textutils.unserialize(data)
end
function save(table,name)
    local file = fs.open(name,"w")
    file.write(textutils.serialize(table))
    file.close()
end
save(1, "counter")
function clearInv()
  for i = 1,16 do
    turtle.select(i)
    turtle.drop(turtle.getItemCount(i))
  end
  turtle.select(1)
end
counter = load("counter")
counter = 0
while true do
    counter = counter + 1
    save(counter, "counter")
    term.clear()
    term.setCursorPos(1,1)
    print("Attacked ".. counter .. "-times")
    if turtle.getItemCount(16) > 0 then
        turtle.turnLeft()
        turtle.turnLeft()
        clearInv()
        turtle.turnLeft()
        turtle.turnLeft()
    end
    turtle.attack()
    sleep(0.5)
end